From the event release:

The Philadelphia Photo Arts Center and The Print Center proudly co-present the annual Philadelphia Art Book Fair which showcases a wide range of exhibitors, from large and small photography and art book publishers to individual artists and institutions, local, national and international.

Free and open to the public, the Philadelphia Art Book Fair will feature book signings and a host of published works to peruse, review and add to your collection. Check out over 70 exhibitors:

Aint–Bad
Alex Lukas & Leah Mackin / DBQ
Aperture Foundation
Basic Edition
BOMB Magazine
Brandon Dean
Brilliant Graphics
Brownbook
Bywater Bros. Editions
Candor Arts
Center For Creative Works
Conveyor Editions
Dancing Foxes Press
Daylight Books
Ditta Baron Hoeber
Endless Others
Fall Line Press
Gabriella Grill & Adam Amram
Got a Girl Crush
Gratuitous Type
Hartford Photo MFA
HOMOCATS
In the In-Between
Institute of Contemporary Art
Jeffrey Stockbridge
Judith Stenneken
Justin Kimball & Tom Young
Katie VanVliet
Kayrock Screenprinting
Leslie A. Grossman
Locks Gallery
Lodima
Lunar Insurrection
MACK
Marianne Dages: Huldra Press
Math Magazine
Nomadic Bookshelf / My Idea of Fun
Oranbeg Press
Paper Crown Press
Paradigm Publishing
Passenger Pigeon Press
Pellinore Press
Philadelphia Museum of Art
Philadelphia Photo Arts Center
PhotoBookArts
Planthouse
Purgatory Pie Press
Risolve Studio
RITA
Saint Lucy Books
Sarah Nicholls
Selfish Magazine
Shannon LaRue
Shortt Editions: Paul Shortt
Soft City Printing
Sometimes Publishing
Space 1026
Spurl Editions
SWAG PURGATORY
Sybil Press
TandM Arts - Blaise Tobia
TEN09
The Photo Review
The Print Center
Tiny Revolutionary Press
TIS books
Title Magazine
TR Ericsson Books/Publications
Ulises
Unnatural Kingdom
Upon
Vox Populi
VUU Studio
Wilt Press
Yoffy Press
Zatara Press

Produced by Little Giant and sponsored by Brilliant Graphics.

Event is open:

Friday, May 5th: 12:00pm - 8:00pm
Saturday, May 6th: 10:00am - 6:00pm

More info available here.